If you have a look at the Trello roadmap here : Vroom Vroom, Progress! you’ll see the cook has been implemented, but not yet introduced into the game. (probably in a later alpha)
So we can look forward to new recipes which could possibly include new crops to grow.
Have a look at this other suggestion too. It talks about a bakery system which also happens to include bread.
Ba-ba-ba-bakery
Should be safe to assume the developers have thought about implementing bread among other foods once they introduce the Cook into the game.